Yeah I know how to get the data. I'm just pondering how to output it and do people justice. Like if I just published money going out to poloniex and others but didn't show you the money coming back, it could make an active trader appear to be selling a lot without ever showing buys. If I just show the net amount it could miss big traders that with zero sums.
What will add some complexity is the exchange to exchange transfers which I will have to figure out the identity of the trader through use of the memo key. I've noticed some traders transfer directly from their Poloniex account to their Bittrex and vice versa so I'll have to map users to memo keys.
well, if it's necessary to identify the flows sources and destinations to that detail... but simply identifying the amounts that flow in and out, that still would be useful information.